00:01
All right, so let's say we have a guitar string and we want to draw the first three harmonics.
00:04
So we'll have the fundamental one looks like this, and then we have our first harmonic which would kind of look like that, and then our second harmonic, let me try that again, one, two, three, would kind of look like that.
00:19
So for part b, we're told that the length of the string is 0 .9 meters and the fundamental frequency is 110 hertz.
00:31
So the first wavelength, the wavelength of the first harmonic is just going to be 2l, so that's 1 .8 meters.
00:39
The second, sorry, second wavelength, we'll call it lambda 2, it's just going to be l, or 2l over 2, so that's 0 .9...